To the Editor:—In The Journal, June 10, page 1868, appears a letter from W. P. Whelan, professor of medical jurisprudence, Creighton Medical College, on the subject of the doctrine of the Catholic Church as to Cesarean section for placenta prævia. In this he brings up, but does not make to my mind entirely clear, the teaching of the church as to operations for ectopic pregnancy. Professor Whelan—as I understand it—is himself a Catholic, the author of a book on this subject, and assumes to speak ex cathedra. His book, which I have, mentions this same subject, but in that also his language is not entirely clear.It must, of course, be conceded that in any case of unruptured ectopic pregnancy, as it presents itself to the surgeon, it is possible that the tube may so rupture as to permit the fetus to live and